Pilot 1 - ProFire PF2200-SB Product Manual

Powered Output

Pilot 1

Pilot 2
Coil 1
Coil 2
SSV
HFV
2.2.7 PILOT
The Pilot state is a system state which represents a minimum amount of heating required to light off
the main burner. It is typically tied to the Pilot valve in the fuel gas train – meaning that the pilot
valve(s) are on in this state but the main valves are off. This state is executed in one of following
situations:
Once a flame is established during the Ignition state,
•
• If one of the configured temperatures exceeds the Main Off setpoint, or
If a main permissive is configured and not satisfied
•
Once in the Pilot state, the system must verify all configured process temperatures are below their
respective process setpoints AND main permissive(s) (if configured) have been cleared in order to enter
the Main Light Off state.
Any alarms or waits that occur during this still will force the system to go to the respective state (e.g.
Lockout or Waiting, respectively).
In the Pilot state, the status of each powered outputs is as follows:
Powered Output
Pilot 1
Pilot 2
Coil 1 /2
SSV
HFV
Status
De-energized during Pre-Ignition
Energized after Pre-Ignition
De-energized if disabled
Same as Pilot 1 if enabled
Energized during and after pre-ignition
De-energized during startup delay
De-energized if disabled
Same as Coil 1 if enabled
De-energized
De-energized
Status
Energized
De-energized if disabled
Energized if enabled
De-Energized
Section 2: PF2200-SB PRODUCT DESCRIPTION
V 4.0
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